Adds Newrelic RPMs metrics to your dashboard.

README.md

Setup

Add the following gems to your Gemfile:

gem 'activeresource'
gem 'newrelic_api'

Update your bundle:

bundle

Put the newrelic_rpm.rb to jobs/newrelic_rpm.rb and configure your API key and Application name.

Finally, choose a metric (see "Emitted metrics" jobs/newrelic_rpm.rb) you want to show on the dashboard and add corresponding HTML code. For example, the code below shows Newrelic Throughput (requests/minute) on the scale of 100. Adjust the scale based on your application usage.

newrelic_rpm.erb

<li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
  <div data-id="rpm_throughput" data-view="Meter" data-title="RPM" data-min="0" data-max="100"></div>
</li>

newrelic_rpm.rb

require 'newrelic_api'

# Newrelic API key
key = 'ENTER YOUR KEY'

# Monitored application
app_name = 'ENTER YOUR APPLICATION NAME'

# Emitted metrics:
# - rpm_apdex
# - rpm_error_rate
# - rpm_throughput
# - rpm_errors
# - rpm_response_time
# - rpm_db
# - rpm_cpu
# - rpm_memory

NewRelicApi.api_key = key

SCHEDULER.every '10s', :first_in => 0 do |job|
  app = NewRelicApi::Account.find(:first).applications(:params =>
    {:conditions => {:name => app_name}}
  ).first

  app.threshold_values.each do |v|
    send_event("rpm_" + v.name.downcase.gsub(/ /, '_'), { value: v.metric_value })
  end

end

I couldn't get the gem to return the application correctly, was quicker to parse the xml with nokogiri.

xml = Nokogiri::XML(open(
  'https://api.newrelic.com/api/v1/accounts/' + account_id + '/applications/' + app_id + '/threshold_values.xml',
  'x-api-key' => key
))

send_event('rpm_throughput', { value: xml.at_css('threshold_value[name="Throughput"]')['metric_value'] })

I wrote a gist that enables several New Relic applications in Dashing:
https://gist.github.com/erikwennerberg/6875943

@morphizer here is the updated version

NewRelicApi.api_key = key

SCHEDULER.every '10s', :first_in => 0 do |job|
  app = NewRelicApi::Account.first.applications.select { |el|
    el.name == app_name
  }.first

  app.threshold_values.each do |v|
    send_event("rpm_" + v.name.downcase.gsub(/ /, '_'), { value: v.metric_value })
  end
end

I know very old, wanted to add a data point. New Relic has deprecated the gem and is no longer work with new API.